I'm wondering if some one could link me a python script that uses middle distance from A and B particles to create C (with a right velocity eredited)...just to use a better method then filter daemon.Thanks.

Ok...the scene I'm studying is based on tendrils generated by a crown daemon.To make a consistent tendril body I used a sheeter daemon but tendrils breakages seems to be not easy to detect as holes...I need an interpolation along a trajectory line.I've modified the good old Karl Righter script (that I consider more elegant of sheeter in may cases) as better I can to start under RF2015 (I'm not a scripter) but, again, tendrils breakages are not holes to fill.